Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:10:26 2012 Optimize a model with 3800 rows, 650 columns and 11950 nonzeros Presolve time: 0.05s Presolved: 3800 rows, 650 columns, 20094 nonzeros Variable types: 0 continuous, 650 integer (650 binary) Found heuristic solution: objective 15.0000000 Root relaxation: objective 3.000000e+00, 5101 iterations, 0.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 52 15.00000 3.00000 80.0% - 0s H 0 0 8.0000000 3.00000 62.5% - 0s 0 0 6.00000 0 104 8.00000 6.00000 25.0% - 0s H 0 0 7.0000000 6.00000 14.3% - 0s 0 0 6.00000 0 104 7.00000 6.00000 14.3% - 0s 0 0 6.00000 0 61 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 16 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 28 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 18 7.00000 6.00000 14.3% - 1s 0 0 6.00000 0 43 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 32 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 14 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 16 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 45 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 37 7.00000 6.00000 14.3% - 3s 0 2 6.00000 0 37 7.00000 6.00000 14.3% - 3s 8 7 6.00000 1 28 7.00000 6.00000 14.3% 35.9 5s 52 18 infeasible 21 7.00000 6.00000 14.3% 707 10s 360 9 6.00000 19 26 7.00000 6.00000 14.3% 254 15s Cutting planes: Gomory: 1 Clique: 14 Zero half: 3 Explored 442 nodes (130758 simplex iterations) in 16.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%